#container, form {
  margin: 0 auto;
}

form { 
  position: relative;
  padding: 20px 0;
  width: 80%;
}
select { 
  border: 1px solid #ccc;
}

input[type="text"] {
  border: 1px solid rgba(217,221,230,1);
  background-color: rgba(217,221,230,.5);
  width: 60%;
}

.btn {
  margin-top: -4px;
}